It is "critical" that customers register for My Oracle Support (MOS), or else they could find service interrupted, according to an official blog post on Monday. Oracle has already been allowing users to do so in order to familiarize themselves with the system.

The aggressive outreach efforts show that Oracle clearly wants to avoid major disruptions to customer service. For one thing, Oracle has made it a point to stress that Sun customers will receive the best support in the industry under its ownership.

In addition, veteran Oracle executive Charles Rozwat was recently tapped to oversee support services. Rozwat reports to Oracle co-president Mark Hurd, who is also fairly new to his role. Both men undoubtedly want no high-profile flare-ups like that which occurred last year, when Oracle moved customers from the older Metalink support system to MOS.

However, there haven't been any major public problems since then regarding MOS, which is supposed to help customers avoid problems as well as fix them. For example, the portal can use information about a company's system configurations to provide notifications for patch suggestions as well as deliver "proactive health checks."